Take-up for sewing-machines.



No. 667,206. Patented Nov.y 26, 190|.

v P. mEHL.

TAKE-UP FR SEWING MACHINES.

(Apprimirm mea su. 1o, 1901.) (No Model.)

y 1f' .l

umm

UNTTED STATES PATENT OFFICE.

PHILIP DIEI-IL, OE ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGERMANUFACTURING COMPANY, A CORPORATION OF NEI/V JERSEY.

TAKE-UP FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 687,206, dated November26, 1901. Application led January 10, 1901. Serial No. l2,765. (Noinodel.)

To all whom t may concern,.-

Be it known that I, PHI'LIP DIEHL, a citizen of the United States,residing at Elizabeth, in the countyof Union and State of New Jersey,have invented certain new and useful Improvements in Take-Ups forSewing-Machines, of which the following is a specification,referencebeinghad therein to the accompanying drawings.

This invention relates to that class of sewing-machine take-ups in whichthe take-up lever is connected at one end to a revolving crank and isfulcrumed between its ends to the free end of a swinging link pivotallyattached at its other end to the frame of the machine, so that as thesaid crank rotates combined bodily translatory and vibrating movementsare imparted to the said take-up lever; and the invention has for itsobject to adapt this class of take-ups to sewing-nua-l ohines ofdifferent constructions from those in connection with which they haveheretofore been used, and more particularly to adapt this class oftake-ups to sewing-machines having rotating lower shafts.

To this end the improved take-u p comprises a take-up lever which isformed straight or substantially so instead of being a bell-crank orangular lever, as heretofore, and in being applied to a sewing-machinehaving a lower rotating shaft this straight take-up lever is connectedat its lower end to a crank on said shaft and is extended up toward theupper portion of the arm of the machine, so that the eye of the saidlever will be conveniently proximate to the desired path of the threadrunning to the needle and also to the threadguides at the upper part ofsaid arm.

In the accompanying drawings, Figure lis a side view of a sewing-machineembodying the invention, and Figs. 2 and 3 are sectional views of thesame through the vertical portion of the arm and with the parts indifferent positions in the two views.

Referring'to the drawings, a denotes the base, and b the arm, of themachine, these parts constituting the frame of the machine and beingpreferably formed of an integral casting. Journaled inthe lower portionor base of this frame and beneath thework-plate c is a rotating driving-shaft d, which may (and preferably will) be provided with a revolvinghook e, operating in connection with a stationary thread-oaseperipherally supported by said hook either as set forth in United StatesPatent No. 663,808, granted December ll, 1900, or otherwise. The shaft dis provided near its rear end with two adjacent cranksfand g, the formerof which is con-y i nected by a pitman h to the rear arm of a 6orock-shaft t', journaled inthe upper portion of the arm ZJ and having atits forward end a second arm connected by a pitmanj to the needle-bar lcto operate the latter. The crank g is for operating the take-up, and tothis end the lower end of the take-up lever mis jointed i to said crank,said lever being preferably formed straight, or approximately so, andbeing extended upward for a proper distance to bring its thread-eye Zconveniently near to the 7o path of the thread running'from the tensiondevice n through the thread-guides o forward to the needle. -Thetake-'up lever m is fulorumed between its ends at q to the free end of aswinging link fr, pivotally attached at s to the frame of the machine,and said lever isso mounted or arranged as to swing when in operation ina plane transverse to the longitudinal axes of both of the shafts d andt.

With the parts constructed and arranged 8o as shown and described therotating crank g will carry the take-up lever m around with it bodilyand will also cause said lever to vibrate on its fulcrum at the free endof the swinging link r, so that the thread-eye at the upper end of saidlever will describe an irregular path, substantially as indicated bydotted lines in Figs. 2 and 5, thereby securing such timing of thetake-up and threadslackening actions as will properly cooperate 9o withthe needle operated from the Vupper rock-shaft t' and the revolving hooke, a timing which could not be secured by the use of a bell-crank orangular take-up lever such as has heretofore been in use in link takeupsor take-ups in which the take-up levers operated from rotating cranksare fulcrumed to the free ends of swinging links. The present inventionis, however, not to be understood as being limited to sewing-machines ofIco the particular kind herein shown and described, as it may also beused in other styles of machines or in machines having differentneedle-bar-operating mechanisms from that of the machine hereinillustrated.

Having thus described my invention, I.

claim and desire to secure by Letters Patentl. In a sewing-machine, thecombination with the stitch-forming devices thereof, of a rotating shaftlocated in the lower part of the machine and provided near its rear endwith a crank, a straight, or substantially straight, take-up leverconnected at its lower end to said crank and arranged to swing in aplane transverse to the longitudinal axis of said shaft, and a swinginglink to the free end of which said take-up lever is fulcrumed betweenits ends.

2. In a sewing-machine, the combination with a rotating shaft located inthe lower part of the machine and provided with two cranks, of arock-shaft located in the upper part of the machine and operatively connected with one of said cranks, a needle-bar operatively connected withsaid rock-shaft, a takeup lever connected at its lower end to the otherof said cranks and so mounted as to swing in a plane transverse to thelongitudinal axes of both of said shafts, a swinging link to which saidtake-up leveris fulcrumed between its ends, and a loop-taking devicecoperating with the needle carried by said needle-bar.

3. In a sewing-machine, the combination with a rotating shaft located inthe lower part of the machine and provided with two cranks, of arock-shaft located in the upper part of the machine and operativelyconnected with one of said cranks, a needle-bar operatively connectedwith said rock-shaft, a straight, orsubstantially straight, take-uplever connected at its lower end to the other of said cranks andarranged to swing in a plane transverse to the longitudinal axes of bothof said shafts, a swinging link to which said take-u p lever is fulcrumed between its ends, and a loop-taking device cooperating with theneedle carried by said needle-bar.

4t. In a sewing-machine, the combination with a rotating shaft locatedin the lower part of the machine and provided with two cranks, of arock-shaft located in the upper part of the machine and operativelyconnected with one of said cranks, a needle-bar operatively connectedwith said rock-shaft, a straight, or substantially straight, take-uplever connected at its lower end to the other of said cranks andarranged to swing in a plane transverse to the longitudinal axes of bothof said shafts, a swinging link to which said take-up lever is fulcrumedbetween its ends, and a rotating hook e cooperating with the needlecarried by said needle-bar.

In testimony whereof I ai'iix my signature in presence of two witnesses.

PHILIP DIEHL. Witnesses:

HENRY CALVER, HENRY J. MILLER.

